JPH0226703Y2 - - Google Patents

Info

Publication number
JPH0226703Y2
JPH0226703Y2 JP1983138286U JP13828683U JPH0226703Y2 JP H0226703 Y2 JPH0226703 Y2 JP H0226703Y2 JP 1983138286 U JP1983138286 U JP 1983138286U JP 13828683 U JP13828683 U JP 13828683U JP H0226703 Y2 JPH0226703 Y2 JP H0226703Y2
Authority
JP
Japan
Prior art keywords
tip
chuck
outer cylinder
core pipe
axial direction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP1983138286U
Other languages
Japanese (ja)
Other versions
JPS6046275U (en
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP13828683U priority Critical patent/JPS6046275U/en
Publication of JPS6046275U publication Critical patent/JPS6046275U/en
Application granted granted Critical
Publication of JPH0226703Y2 publication Critical patent/JPH0226703Y2/ja
Granted legal-status Critical Current

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  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)

Description

【考案の詳細な説明】 この考案は過大な筆圧が加えられた場合、その
筆圧を弾性的に吸収して芯折れを防止する機能を
備えたシヤープペンシルに関する。
[Detailed Description of the Invention] This invention relates to a sharp pencil having a function of elastically absorbing the writing pressure to prevent lead breakage when excessive writing pressure is applied.

従来、このような芯折れ防止機能を備えたシヤ
ープペンシルは、外筒内に軸方向に摺動自在に収
納され、先端にリードチヤツクを有する芯パイプ
と、このリードチヤツクに遊嵌されたチヤツクリ
ングと、このチヤツクリングと上記外筒との間に
位置して上記リードチヤツクに嵌合されたスリー
ブと、このスリーブ後端と上記外筒内面の段部と
の間に介装された過大筆圧緩衝用のスプリングと
で構成されている。
Conventionally, a sharp pencil equipped with such a core breakage prevention function has a core pipe that is housed in an outer cylinder so as to be slidable in the axial direction, and has a lead chuck at the tip, a chuck ring that is loosely fitted to the lead chuck, and a lead chuck that is loosely fitted to the lead chuck. a sleeve positioned between the chuck ring and the outer cylinder and fitted to the lead chuck; a spring for buffering excessive writing pressure interposed between the rear end of the sleeve and a step on the inner surface of the outer cylinder; It consists of

しかし、この構成ではスリーブ、過大筆圧緩衝
用のスプリング等が必要であり、部品個数を多数
必要とし、組立作業の複雑化という欠点があつ
た。
However, this configuration requires a sleeve, a spring for dampening excessive writing pressure, etc., requires a large number of parts, and has the drawback of complicating assembly work.

この考案は上記欠点を解消するためになされた
もので、外筒にスリーブ、筆圧吸収用スプリング
等の機能を持たせて、部品個数を著しく省略し、
組立作業の簡単化、コストの低減化を実現したシ
ヤープペンシルを得ることを目的とする。
This idea was made to eliminate the above-mentioned drawbacks, and by giving the outer cylinder functions such as a sleeve and a spring for absorbing writing pressure, the number of parts was significantly reduced.
The purpose of the present invention is to obtain a sharpening pencil that simplifies assembly work and reduces costs.

以下、この考案の一実施例について図面を参照
して説明する。
An embodiment of this invention will be described below with reference to the drawings.

第1図はこの考案の第1の実施例を示し、外筒
1の先端に嵌合された先具2と、上記外筒1内に
軸方向に移動可能に収納された芯パイプ3と、こ
の芯パイプ3の先端近傍に嵌合されたリードチヤ
ツク4の頭部を締付けるチヤツク締付管5とを有
する。
FIG. 1 shows a first embodiment of this invention, which includes a tip 2 fitted to the tip of an outer cylinder 1, a core pipe 3 housed in the outer cylinder 1 so as to be movable in the axial direction, The core pipe 3 has a chuck tightening tube 5 that tightens the head of the lead chuck 4 fitted near the tip thereof.

上記外筒1は例えばポリプロピレン樹脂、ポリ
アセタール樹脂等の弾性変形する弾性部材で形成
され、その先端には内方に折曲された折曲部6が
形成されている。この折曲部6は先具2の内面段
部11に当接し、かつ、チヤツク締付管5の後端
に当接してチヤツク締付管5の後退方向の移動を
規制している。上記折曲部6と芯パイプ3との間
には、ノツク用の弾性体9が弾発されている。
The outer cylinder 1 is made of an elastic member such as polypropylene resin or polyacetal resin, which is elastically deformable, and has a bent part 6 bent inward at its tip. This bent portion 6 abuts against the inner surface stepped portion 11 of the tip 2 and also abuts against the rear end of the chuck tightening tube 5 to restrict movement of the chuck tightening tube 5 in the backward direction. An elastic body 9 for a knot is provided between the bent portion 6 and the core pipe 3.

また、外筒1の先端部にはクツシヨン部8が形
成されている。このクツシヨン部8は例えば後記
第3図に示すように、スリツトの入つた蛇腹状に
形成され、第1図の区間aで矢印方向の弾発力が
生ずるように形成され、過大筆圧緩衝用のスプリ
ングとして機能する。
Further, a cushion portion 8 is formed at the tip of the outer cylinder 1. For example, as shown in FIG. 3 below, this cushion portion 8 is formed in the shape of a bellows with slits, and is formed so as to generate an elastic force in the direction of the arrow in section a in FIG. functions as a spring.

尚、クツシヨン部8は上述のような形状の他、
スリツト、長孔、孔等所定の弾発力が生じ、過大
筆圧緩衝用のスプリングとして機能すれば如何な
る形状であつてもよい。
In addition to the above-mentioned shape, the cushion part 8 may have a shape as described above.
It may have any shape, such as a slit, a long hole, or a hole, as long as it generates a predetermined elastic force and functions as a spring for buffering excessive writing pressure.

以上の構成によれば、外筒1の先端部はスリー
ブ機能の他に過大筆圧緩衝用のスプリングとして
機能する。従つて、筆記時に芯に過大筆圧が作用
した場合、クツシヨン部8により芯10が外筒1
内へ退没し芯の折損等が防止される。また、従来
必要とされたスリーブ、過大筆圧緩衝用のスプリ
ング等の別個独立した専用部品が不要となり、構
成部品数を著しく省略でき、組立作業が簡単容易
となり、コストの低減も図れる。
According to the above configuration, the tip of the outer cylinder 1 functions not only as a sleeve but also as a spring for buffering excessive writing pressure. Therefore, when excessive writing pressure is applied to the lead during writing, the cushion portion 8 causes the lead 10 to be pushed against the outer cylinder 1.
This prevents the core from breaking. Further, separate and exclusive parts such as a sleeve and a spring for absorbing excessive writing pressure, which were conventionally required, are no longer necessary, the number of component parts can be significantly reduced, assembly work is simplified, and costs can be reduced.

第2図の実施例は上記第1図の実施例を改良し
たものであつて、ポリプロピレン樹脂、ポリアセ
タール樹脂等の弾性部材で形成され、クツシヨン
部8を有する外筒1に加え、芯パイプ3も同様に
弾性部材で形成し、しかもその先端部は第3図に
示すように、スリツトの入つた蛇腹状に形成され
たクツシヨン部7を有し、その先端は外筒1の折
曲部6に当接している。従つて、芯パイプ3のク
ツシヨン部7は、ノツク用のスプリングの機能を
果たす。
The embodiment shown in FIG. 2 is an improvement on the embodiment shown in FIG. Similarly, the cushion part 7 is made of an elastic material and has a bellows-shaped cushion part 7 with a slit, as shown in FIG. are in contact. Therefore, the cushion portion 7 of the core pipe 3 functions as a spring for the lock.

以上の構成によれば、外筒1の先端部はスリー
ブ機能の他に過大筆圧緩衝用のスプリング機能を
有し、他方、芯パイプ3の先端部はノツク用スプ
リングの機能を果たす。従つて、従来必要とされ
たスリーブ、2つのスプリング等の別個独立した
専用部品が不要となり、上記第1図の実施例と同
様の作用効果が得られる。
According to the above configuration, the tip of the outer tube 1 has a spring function for buffering excessive writing pressure in addition to the sleeve function, while the tip of the core pipe 3 functions as a spring for the knob. Therefore, there is no need for separate dedicated parts such as a sleeve and two springs that were conventionally required, and the same effects as in the embodiment shown in FIG. 1 can be obtained.

以上のように、この考案によれば、従来のよう
なスリーブ、スプリング等のそれぞれ独立した専
用部品を不要とし、構成部品数を著しく省略で
き、組立作業の簡略化、コストの低減化も図れる
という効果が得られる。
As described above, this invention eliminates the need for separate dedicated parts such as conventional sleeves and springs, significantly reducing the number of component parts, simplifying assembly work, and reducing costs. Effects can be obtained.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は、この考案の一実施例の縦断面図、第
2図は他の実施例の縦断面図、第3図は芯パイプ
の平面図である。 1……外筒、2……先具、3……芯パイプ、4
……リードチヤツク、5……チヤツク締付管、
7,8……クツシヨン部。
FIG. 1 is a longitudinal sectional view of one embodiment of this invention, FIG. 2 is a longitudinal sectional view of another embodiment, and FIG. 3 is a plan view of a core pipe. 1...Outer cylinder, 2...Tip, 3...Core pipe, 4
...Lead chuck, 5...Chuck tightening pipe,
7, 8...Cushion section.

Claims (1)

【実用新案登録請求の範囲】 1 先端に先具2を嵌合した把持用の外筒1と、
この外筒1内に軸方向に摺動可能に収納され、
先端部近傍にリードチヤツク4を有する芯パイ
プ3と、上記リードチヤツク4を締付けるチヤ
ツク締付管5と、上記先具2の内面段部11に
当接し、かつ、上記チヤツク締付管5の後端に
当接して該チヤツク締付管の後退方向の移動を
規制するように上記外筒1の先端部に内方に折
曲げ形成した折曲部6と、上記外筒1の先端部
に該外筒と一体に軸方向に弾性変形可能なクツ
シヨン部8を設けたことを特徴とするシヤープ
ペンシル。 2 上記芯パイプ3の先端部に、軸方向に弾性変
形可能なクツシヨン部7を設けたことを特徴と
する実用新案登録請求の範囲第1項記載のシヤ
ープペンシル。
[Claims for Utility Model Registration] 1. An outer cylinder 1 for gripping with a tip 2 fitted at the tip;
It is housed in this outer cylinder 1 so as to be slidable in the axial direction,
A core pipe 3 having a lead chuck 4 near its tip, a chuck clamping tube 5 for clamping the lead chuck 4, and a chuck clamping tube 5 that abuts the inner surface step 11 of the tip 2 and at the rear end of the chuck clamping tube 5. A bent part 6 is bent inward at the tip of the outer cylinder 1 so as to abut and restrict movement of the chuck fastening tube in the backward direction, and a bent part 6 is formed at the tip of the outer cylinder 1 by bending it inward. A sharpening pencil characterized in that a cushion part 8 is provided integrally with the cushion part 8 which can be elastically deformed in the axial direction. 2. The sharpening pencil according to claim 1, which is a registered utility model, characterized in that a cushion portion 7 that is elastically deformable in the axial direction is provided at the tip of the core pipe 3.
JP13828683U 1983-09-05 1983-09-05 Shape pencil Granted JPS6046275U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13828683U JPS6046275U (en) 1983-09-05 1983-09-05 Shape pencil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13828683U JPS6046275U (en) 1983-09-05 1983-09-05 Shape pencil

Publications (2)

Publication Number Publication Date
JPS6046275U JPS6046275U (en) 1985-04-01
JPH0226703Y2 true JPH0226703Y2 (en) 1990-07-19

Family

ID=30310330

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13828683U Granted JPS6046275U (en) 1983-09-05 1983-09-05 Shape pencil

Country Status (1)

Country Link
JP (1) JPS6046275U (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0765128B2 (en) * 1986-05-22 1995-07-12 三菱マテリアル株式会社 Method for removing mercury from selenium solution containing mercury
JPH052479Y2 (en) * 1987-01-14 1993-01-21

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5518227U (en) * 1978-07-21 1980-02-05

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5839914Y2 (en) * 1981-03-06 1983-09-08 三菱鉛筆株式会社 Knotsuku style pencil

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5518227U (en) * 1978-07-21 1980-02-05

Also Published As

Publication number Publication date
JPS6046275U (en) 1985-04-01

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